US Bridges

SR 21 over Branch

Good

Monroe County, Alabama · 1.5MI.N.OF Frisco City · Structure no. 001966

Built
1939
86 years old
Condition
Good
inspected September 2023
Type
Culvert
Concrete
Length
40 ft
4 main spans
Daily traffic
5,070
2013 count
Owner
State
State Highway Agency

About this bridge

SR 21 over Branch is a concrete culvert carrying SR 21 over Branch in Monroe County, Alabama. It was built in 1939, so it is 86 years old, older than the Alabama average of 51.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 5,070 vehicles a day, roughly 5% of them trucks, projected to reach 6,323 by 2033. The structure is 40 ft (12.2 m) long. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesSR 21
CrossesBranch
Location1.5MI.N.OF Frisco City
RouteState Highway 21
CountyMonroe County
StateAlabama
Coordinates31.45257, -87.37309
Functional classRural Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating89.4 US tons
Inventory rating53.6 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans4
Design loadH 15
Structure length40 ft (12.2 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,070 (2013)
Projected traffic6,323 by 2033
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost$576,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 21 over Branch built?

It was built in 1939, making it 86 years old in 2025.

What condition is SR 21 over Branch in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2023.

How much traffic does SR 21 over Branch carry?

About 5,070 vehicles per day (2013 count), of which roughly 5% are trucks.

How long is SR 21 over Branch?

The structure is 40 ft (12.2 m) long with a longest span of 10 ft (3 m).

Who owns SR 21 over Branch?

It is owned by the State Highway Agency.